Finding the Fourth Proportional to 7,211,349.80, 9,951,657.99 and 3,948,163.70
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Solution
The fourth proportional to 7,211,349.80, 9,951,657.99 and 3,948,163.70 is: 5,448,463.31
Step by Step Solution
- Step 1: Write the proportion equation
7,211,349.80 : 9,951,657.99 = 3,948,163.70 : x - Step 2: Convert to fraction form
7,211,349.80/9,951,657.99 = 3,948,163.70/x - Step 3: Cross multiply
7,211,349.80x = 9,951,657.99 × 3,948,163.70 - Step 4: Simplify right side
7,211,349.80x = 39,290,774,830,932.97 - Step 5: Solve for x
x = 39,290,774,830,932.97/7,211,349.80 - Step 6: Final answer
x = 5,448,463.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.